#include "Socket.hpp"
#include <iostream>
#include <memory>
#include <sys/wait.h>
#include <functional>

using namespace SocketModule;
using namespace LogModule;

using ioservice_t = std::function<void(std::shared_ptr<Socket> &sock, InetAddr &client)>;

class TcpServer
{
public:
    TcpServer(uint16_t port, ioservice_t service) : _port(port), _listensocketptr(std::make_unique<TcpSocket>()), _isrunning(false), _service(service)
    {
        _listensocketptr->BuildTcpSocketMethod(_port);
    }

    void Start()
    {
        _isrunning = true;
        while (_isrunning)
        {
            InetAddr client;
            auto sock = _listensocketptr->Accept(&client);
            if (sock == nullptr)
            {
                continue;
            }
            LOG(LogLevel::DEBUG) << "accept success ..." << client.StringAddr();

            // sock&&client
            pid_t id = fork();
            if (id < 0)
            {
                LOG(LogLevel::FATAL) << "fork error ...";
                exit(FORK_ERR);
            }
            else if(id==0)
            {
                //子进程
                _listensocketptr->Close();
                if(fork()>0)
                exit(OK);

                //孙子进程
                _service(sock,client);
                sock->Close();
                exit(OK);
            }
            else
            {
                //父进程 ->sock
                sock->Close();
                pid_t rid=waitpid(id,nullptr,0);//事实上并不会等待
                (void)rid;
            }
        }
        _isrunning=false;
    }

    ~TcpServer(){};

private:
    uint16_t _port;
    std::unique_ptr<Socket> _listensocketptr;
    bool _isrunning;
    ioservice_t _service;
};